So, in terms of just the materials used to make the toothbrush, here’s my personal ranking of the options mentioned above: 7th place: Over-engineered soft-grip toothbrush (made from “advanced” thermoplastic elastomers)

So, in terms of just the materials used to make the toothbrush, here’s my personal ranking of the options mentioned above: 7th place: Over-engineered soft-grip toothbrush (made from “advanced” thermoplastic elastomers)